package com.atguigu.gulimalls.common.valid;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import java.util.HashSet;
import java.util.Set;

/**
 * @author GSK
 * @version 1.0
 * @date 2020/12/12 19:51
 */
public class ListValueConstraintValidator implements ConstraintValidator<ListValue,Integer> {
    private Set<Integer> set = new HashSet<>();
    //初始化方法
    @Override
    public void initialize(ListValue constraintAnnotation) {

        int[] vals = constraintAnnotation.vals();
//        if(vals.length == 0){
            System.out.println("this array is null!");
//        }else {
            for (int val: vals) {
                set.add(val);
            }
//        }
    }

    /**
     * 判断是否校验成功
     * @param value 需要校验的值
     * @param context
     * @return
     */
    @Override
    public boolean isValid(Integer value, ConstraintValidatorContext context) {

        return set.contains(value);
    }
}
